New! View global litigation for patent families

US5015513A - Sealable containers - Google Patents

Sealable containers Download PDF

Info

Publication number
US5015513A
US5015513A US07053223 US5322387A US5015513A US 5015513 A US5015513 A US 5015513A US 07053223 US07053223 US 07053223 US 5322387 A US5322387 A US 5322387A US 5015513 A US5015513 A US 5015513A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
water
heat
component
sealable
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07053223
Inventor
Geoffrey Newbold
Douglas Wraige
John D. Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lever Brothers Co
Original Assignee
Lever Brothers Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00Detergent materials characterised by their shape or physical properties
    • C11D17/04Detergent materials characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/13Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • Y10T428/1345Single layer [continuous layer]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/28Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813Heat or solvent activated or sealable
    • Y10T428/2817Heat sealable
    • Y10T428/2826Synthetic resin or polymer

Abstract

A container having at least one opening seal, which seal is mechanically strong in the dry state but disintegrates in water at temperature of 40° C. or below under the influence of mechanical agitation. The seal is formed from a mixture of a water-labile adhesive and a heat-sealable component.

Description

FIELD OF THE INVENTION

The present invention relates to sealable containers especially sealable sachets and other flexible containers, more especially to sealable, detergent containing sachets.

BACKGROUND AND PRIOR ART

Detergent containing sachets sealed with a water-sensitive coating composition are known from U.S. Pat. No. 2,760,942 (Hercules) and GB 1 583 082 (Unilever). GB 1 583 082 discloses a detergent sachet the seams of which are sealed with water soluble adhesives such as polysaccharides or polyvinyl alcohol.

Detergent containing sachets which are sealed with mechanically weak heat seals, which rupture when agitated, are described in EP 11 500B (Unilever).

GB 2 000 177B (Akzo) discloses detergent sachets sealed with material that disintegrates in the wash water at temperatures of from 40° to 60° C. The seal may consist of a mixture of polyethylene glycol which melts at 42° C., together with a thermoplastic acrylic resin.

EP 143 476A (Akzo) discloses detergent sachets of heat-sealable material sealed with an anionic and/or water binding polymer, and a cationic polymeric adhesive, for example, polyethyleneimine.

Sachets intended to give sequential release are described, for example in European Patent Application No. 87 301905.3 (Unilever) filed on Mar. 5, 1987. Such sachets tend, however, to be of complicated construction.

Although containers provided with heat-sealed seams are known they do not provide the opening qualities required for many applications. Containers provided with liquid-labile seams are also known but they have a tendency to open prematurely during storage in the humid conditions found in many kitchens and bathrooms.

DEFINITION OF THE INVENTION

The present invention provides a heat-sealable, liquid-labile closure. According to the invention there is provided a container adapted for delivering a treatment material into an environment comprising both water and mechanical agitation, the container having at least one opening seal mechanically strong in the dry state but which disintegrates in water at temperatures of 40° C. or below under the influence of mechanical agitation, the seal being formed from a mixture of

(i) an adhesive component labile in water at temperatures of 40° C. or below and

(ii) a heat-sealable component insoluble in water at temperatures of 40° C. or below.

DETAILED DESCRIPTION OF THE INVENTION

The container of the invention includes as an essential feature an opening seal between two walls, the opening seal being formed from a mixture of the two components (i) and (ii) defined above. In the description that follows, the mixture of (i) and (ii) will be referred to as the sealant.

Nature of the container walls

The walls of the container are preferably of non-heat-sealable material. By non-heat-sealable material it is meant that the material does not heat-seal to itself at temperatures up to 30° C. greater than the lowest temperature at which the sealant used is heat-sealable. Although it is not essential that the walls are of non-heat-sealable material, it is important that the temperature, duration and pressure of the sealing process are such that the container walls are not directly bonded to one another over large areas without the involvement of an intermediate layer of sealant. The containers are preferably heat-sealed but other methods of sealing including pressure, ultrasonics and high frequency induction may be used. The container will, in general, open more rapidly if at least one wall (or surface) is water-permeable than if all the the walls are impermeable. The walls may be in any form although flexible materials such as webs or sheets of woven, knitted or non-woven fabric or paper are preferred. The wall material is preferably fibrous but may also be filamentary, slitted or foraminous. Suitable fibrous materials include cellulose, cellulose/regenerated cellulose mixtures, polyesters, and mixtures thereof.

In preferred embodiments the walls are comprised of sausage casing paper, a viscose/cellulose mix, which is preferred because of its greater wet strength than many other papers especially at elevated temperatures.

The container walls preferably have a base weight of 5 to 100 gm-2, more preferably 10 to 60 gm-2 and especially 15 to 40 gm-2.

If the container walls are very permeable then the contents may be leached out before the container seals open. This may be a disadvantage if a delayed release of the container contents is required. The problem may be overcome by using less permeable walls.

The Labile Adhesive Component (i)

The labile adhesive component can be any adhesive material which is labile in water at temperature of 40° C. or below. The term "labile" means that the adhesive is dissolved or otherwise disrupted by water, for example, by swelling or dispersion, such that the bond formed by the sealant is significantly weaker in the wet state than in the dry state: typically a seam having the dimensions of 1.5×0.5 cm may have a bond strength as high as 3N or more in the dry state, but on immersion in water the bond strength could be reduced to less than 0.2N. The bond strength may be measured by means of an Alwetron (Trade Mark) Tensiometer.

Preferably, the adhesive component is water-soluble at a temperature of 40° C. or below.

Preferred water-soluble adhesives are polyvinyl pyrrolidone, polyvinyl alcohol or dextrin. Polyvinyl alcohol, however, reacts with borate ions in solution to form poorly soluble crosslinked polymeric systems, and is therefore not preferred for use in containers which contain borates or materials, such as sodium perborate, which decompose to liberate borate ions.

The Sealable Component (ii)

The precise nature of the sealable component is not critical, but it must be insoluble in water at temperatures of 40° C. or below. In particular the sealable component may be polyvinyl acetate, a vinyl acetate-ethylene copolymer or a polyacrylic ester. The adhesive components may in general be used as supplied by the manufacturers and may contain small amounts of other materials such as impurities and plasticisers.

The Sealant Mixture

In use, the time taken before the seal ruptures may be varied by using differing proportions of the components (i) and (ii) to make up the sealant. For example, a high proportion of the heat-sealable component leads to a seal which remains intact for longer when immersed in water than a seal prepared using the same materials and a lower proportion of the heat-sealable component. If too high a proportion of the heat-sealable component is used then the seal may not rupture quickly enough in use. If too high a proportion of the water-labile component is used then the seal may be difficult to form by heat-sealing and may rupture too quickly in use.

The relative amounts of each component may be varied at will to give a seam which opens at the required time. Simple experimentation well within the capability of one skilled in the art is required to give the required opening time. Typical proportions of adhesive component to heat-sealable component are, on a dry weight basis, 50:1 to 1:50, more preferably 20:1 to 1:20 and still more preferably 5:1 to 1:5.

The heat-sealable component is preferably in the form of an emulsion containing 40-55 wt % solids, the emulsion comprising 30 to 90 wt % of the sealant composition. The water-labile component of the sealant composition is preferably in the form of a solution containing 10 to 60 wt % of solids and comprising 10 to 70 wt % of the sealant composition.

The two components are mixed together to form a sealant mixture. For ease of application this preferably has a viscosity at 25° C. in the range 1000 to 6000 cps. This viscosity range is preferred as many conventional coating machines are only able to handle mixtures within this viscosity range. The sealant mixture as applied preferably contains 20 to 55 wt % solids.

Preferably the sealant is in the form of a viscous emulsion which is applied to one side of the surface and dried to give a coating which is flexible enough not to crack when the surface is flexed. This is especially valuable in embodiments where the surfaces to be sealed together are themselves flexible, and, for example, allows sachets to be manufactured on high-speed sachet-making apparatus.

If the sealant mixture is applied in viscous form, then one coat is generally sufficient. However, if the mixture is less viscous then two coats of the sealing composition may be advantageously applied to each wall. The first coat sizes the surface and the second coat forms a layer on the surface. Superior heat-sealing occurs, in general, if both surfaces to be sealed are coated with the composition.

The sealant composition is preferably applied to the surface using conventional roller coating equipment to give a dry, flexible coating which can be heat-sealed at 170° to 200° C. at a pressure of 3 bar and a time of 0.5 seconds on a conventional sachet forming machine. Such machines enable flexible containers of the invention to be made rapidly and easily. Preferably, the dry bond formed between the wall and the sealant composition should be strong enough to result in tearing of the non-heat-sealable material rather than rupture of the bond. Other ways of applying the sealant and sealing the substrates will, of course, readily suggest themselves to one skilled in the art.

Sachet Embodiments

According to a preferred embodiment, the container of the invention is a sachet. Sachets in accordance with the invention are preferably rectangular or square and made with four opening seals or one fold and three opening seals, although in principle one opening seal is sufficient. Sachets also including non-opening seals are within the scope of the present invention but pattern coating may then be required.

Sachets can be made by forming the material into a pouch with the coating on the inside. The contents are then introduced and the sachet sealed.

The present invention is of use both for single compartment sachets which deliver their contents very rapidly and also for multicompartment sachets which deliver the contents of the compartments sequentially by the use of a number of seals opening at different times.

Container Contents

The contents of the container may be in any physical form. Preferably the contents are in particulate form. The container may contain any substances which are compatible with the materials of which the article of the invention is constructed. Aqueous liquids should, for example, be avoided as they would weaken the seal prematurely. The invention is of especial applicability to the home laundry process, and preferred contents of the article of the invention include fully formulated detergent compositions, bleaches, bleach precursors, fabric softeners, stain removing agents and anti-bacterial agents. The article of the invention is not only of use in the washing and dishwashing fields, and other contents and possible fields of use will, of course, be readily apparent to one skilled in the art.

Although the invention has been illustrated by reference to opening in an aqueous environment, one skilled in the art will readily recognise that containers opening in other solvent systems are within the scope of the invention.

EXAMPLES

The invention will be illustrated by the following non-limiting examples. All coating levels are on a dry basis.

EXAMPLE 1

______________________________________SealantDatac (Trade Mark) 533   40 wt %(Polyvinyl acetate/water emulsion,53% solids, viscosity 3000 cps)National (Trade Mark) 018-1074E                    60 wt %Aqueous polyvinyl alcohol,12% solids, viscosity 6000 cpsSubstrateNon-heat-sealable, tea-bag paper                    18 gm.sup.-2______________________________________

Two coats of sealant in amounts of 16 gm-2 and 8 gm-2 respectively were applied to the substrate, which was dried at 60° C. between each coat. A sachet 150 mm square, containing 150 g of detergent powder was formed by heat sealing the coated paper at 180° C. at 45 psi (3 bar) for 0.5 second. The sachet opened after agitation in water for one minute at 40° C.

EXAMPLE 2

______________________________________SealantDatac 533        90 wt %National 018-1047E            10 wt %SubstrateAs Example 1.______________________________________

A sachet was formed as described in Example 1. The sachet opened after agitation in water for ten minutes.

______________________________________SealantVinamul (Trade Mark) 3265                50 wt %(Copolymer of vinyl acetatewith 25% ethylene, 53% solidsviscosity 3000 cps at 25° C.)National 018-1074E   50 wt %SubstrateAs Example 1.______________________________________

Two coats of sealant in amounts of 8 gm-2 dry were applied to the substrate by a roller coating machine fitted with a heated drum and hot-air drying system. The coated paper was formed into 150 mm square sachets filled with 60 g of detergent powder using an Ilapack type sachet making machine. The sachet opened within 2to 4 minutes of coming into contact with wash water when tested in a washing machine set at 40° C.

EXAMPLE 4

______________________________________SealantAs Example 1SubstrateSausage Casing Paper             21 gm.sup.-2______________________________________

Two coats of sealant in amounts of 10 gm-2 respectively were applied to the substrate which was dried at 60° C. between each coat. A sachet 150 mm square, containing 150 g of detergent powder was formed by heat-sealing the coated paper at 180° C. at 45 psi (3 bar) for 0.5 second. The sachet opened after agitation in water for two minutes at 40° C.

EXAMPLES 5 TO 9

A range of sachets differing in the relative proportions of the labile adhesive component and the heat-sealable component of the seam were made in order to study the effect on opening time.

All the sachets were made of sausage casing paper having a base weight of 21 gm-2. The results are shown in Table 1 and it may readily be seen that the opening time is a function of the sealant composition.

EXAMPLES 10 TO 15

A similar series of experiments to those described in Examples 5 to 9 were performed using a coffee bag paper sold under the Trade Mark, Crompton 824. The results are shown in Table 2.

                                  TABLE 1__________________________________________________________________________Examples 5-9Datac 533(wt %  National 018-1074E                 Coating level                        Dry Bond                               OpeningExampleof emulsion)       (wt % of solution)                 (gm.sup.-2)                        Strength* (N)                               Time (min)__________________________________________________________________________5    70     30        45     14.2   5.56    50     50        37     12.5   2.57    40     60        32     7.7    18    30     70        30     5.8    19    20     80        28     5.2    0.5__________________________________________________________________________ *measured on strip 1.5 × 0.5 cm using Alwetron (Trade Mark) tensiometer

                                  TABLE 2__________________________________________________________________________Examples 10-15Datac 533(wt %  National 018-1074E                 Coating level                        Dry Bond                               OpeningExampleof emulsion)       (wt % of solution)                 (gm.sup.-2)                        Strength (N)                               Time (min)__________________________________________________________________________10   70     30        44     9      511   60     40        38     9.6    412   50     50        40     9.6    313   40     60        32     10.1   214   30     70        27     9.7    215   20     80        23     8.1    1__________________________________________________________________________
EXAMPLE 16

a sachet product displaying sequential release was prepared as follows: A strip of polyethylene laminated cellulosic non-woven fabric of base weight 30 gm-2 (Storalene (Trade Mark)) of dimensions 10×20 cm was coated with a 1:1 mixture of Datac 533 and National 018-1074E at a coating level of 16 gm-2 over an area of 10×10 cm extending from one short edge of the fabric and dried. The remaining surface of that side was coated at the same level with a 9:1 mixture of Datac 533 and National 018-1074E and dried. Conventional detergent powder (50 g) and sodium bromide (1.6 g) was placed on the 1:1 `side` and potassium monopersulphate (8 g) on the 9:1 `side`. The fabric was folded along the major axis and heat-sealed along the edges and middle to form two, joined 10×10 cm sachets, one containing the detergent powder and the other the per-salt. The sachet was introduced into a conventional washing machine. At 40° C., the detergent was released into the wash liquor after 2.5 minutes and the per-salt after 11 minutes.

EXAMPLE 17

A sachet identical to that prepared in Example 1 was prepared with the exception that the sachet was sealed by high frequency induction. The sachet opened after agitation in water for one minute at 40° C.

Claims (3)

We claim:
1. A container formed from flexible materials adapted for delivering a treatment material into an environment comprising both water and mechanical agitation, the container having between two flexible walls thereof, at least one opening sealed mechanically strong in the dry state but which disintegrates in water of temperatures of 40° C. or below under the influence of mechanical agitation, the seal being formed from a mixture of:
(i) an adhesive component soluble in water at temperatures of 40° C. or below and
(ii) a heat-sealable component insoluble in water at temperatures of 40° C. or below.
wherein the heat-sealable component is selected from the group consisting of vinyl acetate homopolymers, vinyl acetate/ethylene copolymers and polyacrylic acid esters.
2. A container formed from flexible materials adapted for delivering a treatment material into an environment comprising both water and mechanical agitation, the container having between two flexible walls thereof, at least one opening sealed mechanically strong in the dry state but which disintegrates in water of temperatures of 40° C. or below under the influence of mechanical agitation, the seal being formed from a mixture of:
(i) an adhesive component soluble in water at temperatures of 40° C. or below and
(ii) a heat-sealable component insoluble in water at temperatures of 40° C. or below.
wherein the ratio of adhesive component to heat-sealable component ranges from 4:1 to 1:1.
3. A container formed from flexible materials adapted for delivering a treatment material into an environment comprising both water and mechanical agitation, the container having at least one opening seal between two non-heat-sealable walls, the opening seal being a heat seal mechanically strong in the dry state but which disintegrates in water at temperatures of 40° C. or below under the influence of mechanical agitation, the heat seal being formed from a mixture of:
(i) an adhesive component soluble in water at temperatures of 40° C. or below and
(ii) a heat-sealable component insoluble in water at temperatures of 40° C. or below,
wherein the ratio of adhesive component to heat-sealable component ranges from 4:1 to 1:1.
US07053223 1986-05-23 1987-05-22 Sealable containers Expired - Fee Related US5015513A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8612706 1986-05-23
GB8612706A GB8612706D0 (en) 1986-05-23 1986-05-23 Sealable container

Publications (1)

Publication Number Publication Date
US5015513A true US5015513A (en) 1991-05-14

Family

ID=10598407

Family Applications (1)

Application Number Title Priority Date Filing Date
US07053223 Expired - Fee Related US5015513A (en) 1986-05-23 1987-05-22 Sealable containers

Country Status (8)

Country Link
US (1) US5015513A (en)
EP (1) EP0246897B1 (en)
JP (1) JPH0735170B2 (en)
KR (1) KR920003712B1 (en)
CA (1) CA1271962A (en)
DE (1) DE3774327D1 (en)
ES (1) ES2026533T3 (en)
GB (1) GB8612706D0 (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5132036A (en) * 1989-08-23 1992-07-21 Lever Brothers Company, Division Of Conopco, Inc. Laundry treatment product
US5259994A (en) * 1992-08-03 1993-11-09 The Procter & Gamble Company Particulate laundry detergent compositions with polyvinyl pyrollidone
US5431997A (en) * 1993-07-01 1995-07-11 The Dexter Corporation Process of producing porous web materials used for making infusion packages for brewing beverages and the web materials thus produced
WO1996037652A1 (en) * 1995-05-25 1996-11-28 The Procter & Gamble Company Dry cleaning composition on improved carrier
US5691015A (en) * 1993-01-25 1997-11-25 Aicello Chemical Co., Ltd. Composite film bags for packaging
US5804219A (en) * 1992-11-16 1998-09-08 The Procter & Gamble Company Fabric softening compositions with dye transfer inhibitors for improved fabric appearance
US6037319A (en) * 1997-04-01 2000-03-14 Dickler Chemical Laboratories, Inc. Water-soluble packets containing liquid cleaning concentrates
US6040024A (en) * 1997-03-26 2000-03-21 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, and bag and package using the laminated film
US6136776A (en) * 1997-04-01 2000-10-24 Dickler Chemical Laboratories, Inc. Germicidal detergent packet
US6244746B1 (en) 1995-10-09 2001-06-12 Kyodo Shiko Co. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
EP0608801B2 (en) 1993-01-25 2002-01-16 Aicello Chemical Company Limited Composite film bags for packaging
US6440508B1 (en) 1997-11-13 2002-08-27 Kyodo Shiko Co. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
US20020137648A1 (en) * 2000-11-27 2002-09-26 Sanjeev Sharma Dishwashing method
US20020142931A1 (en) * 2000-07-19 2002-10-03 The Procter & Gamble Company Gel form automatic dishwashing compositions, methods of preparation and use thereof
GB2358382B (en) * 1999-11-17 2003-01-29 Reckitt Benckiser Rigid water-soluble containers
EP0707537B2 (en) 1993-06-15 2003-05-14 Syngenta Participations AG Packaging material comprising a water-soluble film
US6670314B2 (en) 2000-11-27 2003-12-30 The Procter & Gamble Company Dishwashing method
US20050003992A1 (en) * 2000-02-17 2005-01-06 The Procter & Gamble Company Laundry additive sachet
US20050061703A1 (en) * 2000-11-27 2005-03-24 Catlin Tanguy Marie Louis Alexandre Detergent products, methods and manufacture
US20060260973A1 (en) * 2003-06-20 2006-11-23 Plantic Technologies Ltd. Easy open water soluble blister package
US7351683B2 (en) * 2000-02-17 2008-04-01 The Procter & Gamble Company Laundry additive sachet
US7420481B2 (en) 1999-12-03 2008-09-02 Broadcom Corporation Interspersed training among data
US8283300B2 (en) 2000-11-27 2012-10-09 The Procter & Gamble Company Detergent products, methods and manufacture
US8435935B2 (en) 2000-11-27 2013-05-07 The Procter & Gamble Company Detergent products, methods and manufacture
US8940676B2 (en) 2000-11-27 2015-01-27 The Procter & Gamble Company Detergent products, methods and manufacture

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8724025D0 (en) * 1987-10-13 1987-11-18 Unilever Plc Sealable sachets
US5222595A (en) * 1990-07-18 1993-06-29 Rhone-Poulenc Ag Company Bag in a bag for containerization of toxic or hazardous material
GB9021516D0 (en) * 1990-10-03 1990-11-14 Unilever Plc Packaging film and sachet product
FR2714679B1 (en) * 1994-01-05 1996-03-15 Ideal Use of a sachet for packaging a powdery textile dye or pigment.
GB9401893D0 (en) * 1994-02-01 1994-03-30 Aquasol Ltd New packages
US6499597B2 (en) 1994-02-01 2002-12-31 Aquasol Limited Skin package
WO2001013719A3 (en) * 1999-08-19 2002-09-26 Aventis Cropscience Sa Container for pesticides
GB0024364D0 (en) * 2000-10-05 2000-11-22 Procter & Gamble Method for treating stained materials
GB0111980D0 (en) * 2001-05-17 2001-07-04 Reckitt Benckiser Uk Ltd Improvements in or relating to containers
DE102010026241A1 (en) * 2010-06-28 2011-12-29 Mondi Ag Bag with a designed to dissolve in a moist environment bag wall and use the bag as a cement bag

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760942A (en) * 1952-04-11 1956-08-28 Hercules Powder Co Ltd Heat-sealable coating consisting of polyvinyl alcohol, urea, and dextrose
US3895905A (en) * 1973-11-09 1975-07-22 Gillette Co Lighter
GB2000177A (en) * 1977-06-27 1979-01-04 Akzo Nv Detergent compositions
US4188304A (en) * 1977-05-18 1980-02-12 Lever Brothers Company Detergent composition in a water-insoluble bag having a water-sensitive seal
EP0011968A1 (en) * 1978-11-17 1980-06-11 Unilever Plc Particulate detergent composition contained within a closed bag of sheet material
GB2090603A (en) * 1980-12-15 1982-07-14 Colgate Palmolive Co Water Soluble Films of Polyvinyl Alcohol and Polyacrylic Acid
US4356099A (en) * 1980-05-16 1982-10-26 Lever Brothers Company Fabric treatment products
EP0143476A1 (en) * 1983-10-03 1985-06-05 Akzo N.V. Dosing unit comprising a detergent and/or bleaching agent
EP0157612A2 (en) * 1984-04-02 1985-10-09 The Clorox Company Rubber toughened polyvinyl alcohol films
US4555354A (en) * 1978-11-17 1985-11-26 Lever Brothers Company Detergents products
US4626372A (en) * 1981-11-10 1986-12-02 The Clorox Company Borate solution soluble polyvinyl alcohol films

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857316A (en) * 1981-10-02 1983-04-05 Mikio Yamazaki Depressant for secretion of acid in stomach

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760942A (en) * 1952-04-11 1956-08-28 Hercules Powder Co Ltd Heat-sealable coating consisting of polyvinyl alcohol, urea, and dextrose
US3895905A (en) * 1973-11-09 1975-07-22 Gillette Co Lighter
US4188304A (en) * 1977-05-18 1980-02-12 Lever Brothers Company Detergent composition in a water-insoluble bag having a water-sensitive seal
GB1583082A (en) * 1977-05-18 1981-01-21 Unilever Ltd Detergent products
GB2000177A (en) * 1977-06-27 1979-01-04 Akzo Nv Detergent compositions
EP0011968A1 (en) * 1978-11-17 1980-06-11 Unilever Plc Particulate detergent composition contained within a closed bag of sheet material
US4555354A (en) * 1978-11-17 1985-11-26 Lever Brothers Company Detergents products
US4356099A (en) * 1980-05-16 1982-10-26 Lever Brothers Company Fabric treatment products
GB2090603A (en) * 1980-12-15 1982-07-14 Colgate Palmolive Co Water Soluble Films of Polyvinyl Alcohol and Polyacrylic Acid
US4626372A (en) * 1981-11-10 1986-12-02 The Clorox Company Borate solution soluble polyvinyl alcohol films
EP0143476A1 (en) * 1983-10-03 1985-06-05 Akzo N.V. Dosing unit comprising a detergent and/or bleaching agent
EP0157612A2 (en) * 1984-04-02 1985-10-09 The Clorox Company Rubber toughened polyvinyl alcohol films

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5132036A (en) * 1989-08-23 1992-07-21 Lever Brothers Company, Division Of Conopco, Inc. Laundry treatment product
US5259994A (en) * 1992-08-03 1993-11-09 The Procter & Gamble Company Particulate laundry detergent compositions with polyvinyl pyrollidone
US5804219A (en) * 1992-11-16 1998-09-08 The Procter & Gamble Company Fabric softening compositions with dye transfer inhibitors for improved fabric appearance
US5691015A (en) * 1993-01-25 1997-11-25 Aicello Chemical Co., Ltd. Composite film bags for packaging
EP0608801B2 (en) 1993-01-25 2002-01-16 Aicello Chemical Company Limited Composite film bags for packaging
EP0707537B2 (en) 1993-06-15 2003-05-14 Syngenta Participations AG Packaging material comprising a water-soluble film
US5431997A (en) * 1993-07-01 1995-07-11 The Dexter Corporation Process of producing porous web materials used for making infusion packages for brewing beverages and the web materials thus produced
US5630848A (en) * 1995-05-25 1997-05-20 The Procter & Gamble Company Dry cleaning process with hydroentangled carrier substrate
WO1996037652A1 (en) * 1995-05-25 1996-11-28 The Procter & Gamble Company Dry cleaning composition on improved carrier
US6984067B2 (en) 1995-10-09 2006-01-10 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
US20050186369A1 (en) * 1995-10-09 2005-08-25 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
US6244746B1 (en) 1995-10-09 2001-06-12 Kyodo Shiko Co. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
US7364359B2 (en) 1995-10-09 2008-04-29 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
US6040024A (en) * 1997-03-26 2000-03-21 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, and bag and package using the laminated film
US6037319A (en) * 1997-04-01 2000-03-14 Dickler Chemical Laboratories, Inc. Water-soluble packets containing liquid cleaning concentrates
US6136776A (en) * 1997-04-01 2000-10-24 Dickler Chemical Laboratories, Inc. Germicidal detergent packet
US6440508B1 (en) 1997-11-13 2002-08-27 Kyodo Shiko Co. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
US6471401B1 (en) 1997-11-13 2002-10-29 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
GB2358382B (en) * 1999-11-17 2003-01-29 Reckitt Benckiser Rigid water-soluble containers
US20030108705A1 (en) * 1999-11-17 2003-06-12 Reckitt Benckiser (Uk) Limited Injection-molded water soluble container
US20040151855A1 (en) * 1999-11-17 2004-08-05 Reckitt Benckiser (Uk) Limited And Aquasol Limited Injection-molded water soluble container
US7420481B2 (en) 1999-12-03 2008-09-02 Broadcom Corporation Interspersed training among data
US7351683B2 (en) * 2000-02-17 2008-04-01 The Procter & Gamble Company Laundry additive sachet
US20050003992A1 (en) * 2000-02-17 2005-01-06 The Procter & Gamble Company Laundry additive sachet
US7615524B2 (en) 2000-02-17 2009-11-10 The Procter & Gamble Co. Laundry additive sachet
US20020142931A1 (en) * 2000-07-19 2002-10-03 The Procter & Gamble Company Gel form automatic dishwashing compositions, methods of preparation and use thereof
US6670314B2 (en) 2000-11-27 2003-12-30 The Procter & Gamble Company Dishwashing method
US7125828B2 (en) 2000-11-27 2006-10-24 The Procter & Gamble Company Detergent products, methods and manufacture
US9382506B2 (en) 2000-11-27 2016-07-05 The Procter & Gamble Company Detergent products, methods and manufacture
US20080041020A1 (en) * 2000-11-27 2008-02-21 Alexandre Catlin Tanguy M L Detergent products, methods and manufacture
US20080076693A1 (en) * 2000-11-27 2008-03-27 The Procter & Gamble Company Dishwashing method
US20060090779A1 (en) * 2000-11-27 2006-05-04 The Procter & Gamble Company Dishwashing method
US20060097424A1 (en) * 2000-11-27 2006-05-11 The Procter & Gamble Company Dishwashing method
US7386971B2 (en) 2000-11-27 2008-06-17 The Procter & Gamble Company Detergent products, methods and manufacture
US20050061703A1 (en) * 2000-11-27 2005-03-24 Catlin Tanguy Marie Louis Alexandre Detergent products, methods and manufacture
US7521411B2 (en) 2000-11-27 2009-04-21 The Procter & Gamble Company Dishwashing method
US7550421B2 (en) 2000-11-27 2009-06-23 The Procter & Gamble Company Dishwashing method
US9434916B2 (en) 2000-11-27 2016-09-06 The Procter & Gamble Company Detergent products, methods and manufacture
US7648951B2 (en) 2000-11-27 2010-01-19 The Procter & Gamble Company Dishwashing method
US20100081598A1 (en) * 2000-11-27 2010-04-01 The Procter & Gamble Company Dishwashing method
US8156713B2 (en) 2000-11-27 2012-04-17 The Procter & Gamble Company Detergent products, methods and manufacture
US8250837B2 (en) 2000-11-27 2012-08-28 The Procter & Gamble Company Detergent products, methods and manufacture
US8283300B2 (en) 2000-11-27 2012-10-09 The Procter & Gamble Company Detergent products, methods and manufacture
US20020137648A1 (en) * 2000-11-27 2002-09-26 Sanjeev Sharma Dishwashing method
US8435935B2 (en) 2000-11-27 2013-05-07 The Procter & Gamble Company Detergent products, methods and manufacture
US8518866B2 (en) 2000-11-27 2013-08-27 The Procter & Gamble Company Detergent products, methods and manufacture
US8658585B2 (en) 2000-11-27 2014-02-25 Tanguy Marie Louise Alexandre Catlin Detergent products, methods and manufacture
US8940676B2 (en) 2000-11-27 2015-01-27 The Procter & Gamble Company Detergent products, methods and manufacture
US8357647B2 (en) 2000-11-27 2013-01-22 The Procter & Gamble Company Dishwashing method
US20060260973A1 (en) * 2003-06-20 2006-11-23 Plantic Technologies Ltd. Easy open water soluble blister package

Also Published As

Publication number Publication date Type
JPS62287861A (en) 1987-12-14 application
EP0246897A2 (en) 1987-11-25 application
GB8612706D0 (en) 1986-07-02 grant
JPH0735170B2 (en) 1995-04-19 grant
KR920003712B1 (en) 1992-05-09 grant
JP2001737C (en) grant
EP0246897A3 (en) 1989-03-08 application
ES2026533T3 (en) 1992-05-01 grant
DE3774327D1 (en) 1991-12-12 grant
CA1271962A1 (en) grant
CA1271962A (en) 1990-07-24 grant
EP0246897B1 (en) 1991-11-06 grant

Similar Documents

Publication Publication Date Title
US3511436A (en) Easy opening heat sealed package
US3616166A (en) Adhesive composition and bonded nonwoven fabrics
US3563371A (en) Wet towel package
US3279511A (en) Flexible packaging system
US4343403A (en) Polyvinyl acetate latex impregnated towelette
US4041205A (en) Residue-free fabric softening article for use in laundry dryer
US4103047A (en) Fabric treatment compositions
US4808086A (en) Articles and methods for treating fabrics
US5746776A (en) Dry-cleaning kit for in-dryer use
US4597218A (en) Sachet for use in pest control
US4820435A (en) Liquid-dispensing pouch
US4033918A (en) Water removable pressure sensitive adhesive
US5743942A (en) Desiccant container
US4886615A (en) Hydroxy polycarboxylic acid built non-aqueous liquid cleaning composition and method for use, and package therefor
US3499820A (en) Self-supporting laminate of polymeric films with an intermediate layer of mineral filler particles
US4011172A (en) Bleaching articles
US4372447A (en) Flushable towelette
US4395261A (en) Vapor hydrogen peroxide bleach delivery
US3676199A (en) Fabric conditioning article and use thereof
US4098937A (en) Treatment of fabrics in machine dryers
US3619842A (en) Method articles and compositions of matter containing large capsules
US3859125A (en) Soluble coated paper
US4818422A (en) Fabric softening detersive article
US3988521A (en) Laminated structures and methods and compositions for producing same
US4016327A (en) Laminated structures and methods and compositions for producing same

Legal Events

Date Code Title Description
AS Assignment

Owner name: LEVER BROTHERS COMPANY, 300 PARK AVENUE, NEW YORK,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:NEWBOLD, GEOFFREY;WRAIGE, DOUGLAS;WAGNER, JOHN D.;REEL/FRAME:004743/0779

Effective date: 19870629

Owner name: LEVER BROTHERS COMPANY, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NEWBOLD, GEOFFREY;WRAIGE, DOUGLAS;WAGNER, JOHN D.;REEL/FRAME:004743/0779

Effective date: 19870629

FPAY Fee payment

Year of fee payment: 4

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Expired due to failure to pay maintenance fee

Effective date: 19990514